Cotton-cultivator.



J. W! DOTY.

COTTON CULTIVATOR.

APPLICATION FILED NOV. 2a, 1909.

Patentd Mar. 22, 1910.

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APPLICATION FILED NOV. 2a, 1908.

Patented Mar. 22, 1910.

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COTTON-CULTIVATOR.

Specification of Letters Patent.

Application filed. November 28, 1908.

Patented Mar. 22, 1910.

Serial No. 464,924.

To all whom it may concern:

Be it known that I, JOHN WV. Dory, a citizen of the United'States,residing at Kellyville, in the county of Greek and State of Oklahoma,have invented new and useful Improvements in Cotton-Cultivators, ofwhich the following is a specification.

This invention relates to cultivators and particularly implements of theclass described used for cultivating cotton plants, the object of theinvention being to provide a simple and practical machine for cutting orchopping out a certain proportion of the cotton plants in each row,leaving the remaining plants in stands or hills.

The cultivator of this invention is known in the art as a straddle rowcultivator and embodies a novel construction and arrangement of scrapersor choppers embodying relatively movable sections which cooperate toremove certain plants and are separated automatically to leave otherplants, the entire mechanism of the cultivator being automatic inoperation.

With the above and other objects in View the invention consists in thenovel construction, combination and arrangement of parts hereinafterdescribed, illustrated and claimed.

In the accompanying drawings :-Figure 1 is a plan view of a cultivatorembodying the present invention. Fig. 2 is a vertical cross sectionthrough the same. Fig. 3 is a vertical longitudinal section through thecultivator. Fig. 4 is a detail perspective view of the trip lever andits connections.

The cultivator disclosed in this invention is designed to be attached toany ordinary cultivator and to that end it comprises a pair of carryingwheels 1 which are mounted on the opposite ends of an axle 2 which, asshown in Fig. 1, comprises oppositely arranged L-shaped sections, theinner portions 3 of which extend in the direction of travel of themachine and are arranged in parallel the stirrup 7 as best illustratedin Fig. 2, and having the forward end of the center beam (3 pivotedtherein as shown in Fig. 3.

Arranged at opposite sides of the center beam 6 and normally in parallelrelation thereto are scraper beams 9 the same being pivotally connectedat their forward ends to a cross head 10 which is centrally secured tothe center beam 6. The rear ends of the scraper beams 9 are curved downward and have connected thereto the oppositely arranged sections 11 ofthe scraper or chopper. The scraper sections 11 are pivotally connectedto the rear ends of the beams 9 to adapt them to swing back upon meetingan obstruction and to that end each of said scraper sections is providedon the rear side with a lug 12 to which is pivotally connected a link 13attached to one arm of a bell crank lever fulcrumed at 14: on therespective scraper beam 9 while the other shorter arm of said bell cranklever has attached thereto one end of a spring 15 the other end of whichis connected to a bracket.

or extension 16 on the scraper beam the arrangement being such that thespring 15 while strong enough to hold the scraper section 11 in itsoperative position, is also adapted to yield under excessive strain toallow the scraper section to swing back on its pivotal connection withthe scraper beam.

The scraper beams 9 are normally held toward each other by means of a.contractile spring 17 having its opposite extremities connected to saidbeams as shown in Fig. 1 in which position the adjacent edges of thescraper sections 11 are in contact with each other thereby giving to thescraper as a whole the form of a broad and V-shaped plow point or shovelas clearly seen in Fig.

1. At suitable intervals in the travel of the cultivator the scraperbeams 9 and the scraper sections 11 are spread apart or forced away fromeach other in opposite directions by means of toggle links 18 connectedat their outer ends pivotally to the scraper beams while the inner endsthereof are pivotally connected together and also pivotally attached tothe rear extremity of an operating rod 19 provided intermediate itslength with a slot 20 through which is inserted a pin 21 carried by themain center beam 6, the length of the slot 20 determining the amount ofend movement of the operating rod 19.

Connected to the forward end of the rod 19 is a chain or other flexibleelement 22 which at its forwardend is connected to a crank arm 23 of avertically disposed rock shaft 24 journaled in bearings secured to oneside of the arch at. On the same rock shaft 24 there is another crankarm 25 from which a flexible connection 26 extends to one arm 27 of anelbow trip lever 28 pivotally mounted on the upper end of a fulcrum post29 secured at its lower end to the machine axle as shown at 30. Theother arm 31 of the elbow lever which in reality constitutes a triplever is arranged in the path of movement of the spokes 32 of theadjacent carrying wheel 1 while the trip lever is normally held in theposition shown in Fig. 1 by means of an expansive spring 33. As themachine moves forward, spokes 32 come in contact with the trip lever 31,rocking the same, and through the connections described, drawing theoperating rod 19 forward. This acts upon the toggle links 18 to spreadapart the scraper beams 9 and correspondingly separate the meeting edgesof the scraper sections 11. It will thus be apparent that during thetime the scraper sections are separated, plants will be left standing asthe machine moves forward.

The scraper beams lie and operate between upper and lower cross bars 31secured centrally to the main center beam 6, the bars 34 forming a crosshead which acts as a i combined support and guide for the scraper beamsin their lateral movement. Secured to the opposite ends of the crosshead 34 is a U-shaped frame embodying the oppositely arranged sides 35and the inwardly bent and overlapping rear portions 36 which are boltedtogether as shown at 37 and also bolted to the rear extremity of themain center beam as shown at 38.

10 designates the cultivating beams provided with plows or shovels 411which operate between the rows of plants, while 42 designates the frameof an ordinary cultivator to which the cultivating attachment of thisinvention is adapted to be applied.

43 designates suitable operating handles for directing the path ofthemachine and causing the same to run in proper alinement with the rows ofplants.

7 From the foregoing description it will be seen that when the scrapersections 11 are in contact with each other as shown in Fig. 1, they actas a plow and'remove the plants in their path. Intermittently thescraper sections are caused to separate and at, such times they do notplow up or uproot the plants which therefore, remainstanding, it beingunderstood that the mechanism is so timed in proportion to the side ofthe carrying wheels 1 that the requisite number of plants will be leftin stands or hills. In backing the machine, the spring yields to allowthe trip lever 28 to swing back and permit the spokes 32 to pass by thetrip lever.

I claim A cotton cultivator comprising a frame,

carrying wheels therefor, a central longiby, said means comprisingforwardly di verging toggle links, an operating connection associatedwith-said links, and a mechanical device for intermittently actuatingthe link operating element.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN W. DOTY.

l/Vitnesses LUM RAesnELL, R. E. Soo'r'r.

